79660 has 24 divisors (see below), whose sum is σ = 191520. Its totient is φ = 27264.

The previous prime is 79657. The next prime is 79669. The reversal of 79660 is 6697.

79660 = T₆₁ + T₆₂ + ... + T₈₈.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (79669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145 + ... + 424.

It is an arithmetic number, because the mean of its divisors is an integer number (7980).

2⁷⁹⁶⁶⁰ is an apocalyptic number.

79660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79660 is an abundant number, since it is smaller than the sum of its proper divisors (111860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95760).

79660 is a wasteful number, since it uses less digits than its factorization.

79660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 79660 is about 282.2410317441. The cubic root of 79660 is about 43.0275648030.

The spelling of 79660 in words is "seventy-nine thousand, six hundred sixty".